* bug#9458: 24.0.50; Searching in binary buffers
@ 2011-09-07 12:50 Helmut Eller
2011-09-07 16:09 ` Andreas Schwab
2011-09-07 16:51 ` Andreas Schwab
0 siblings, 2 replies; 3+ messages in thread
From: Helmut Eller @ 2011-09-07 12:50 UTC (permalink / raw)
To: 9458
search-forward seems to work strangely in binary/unibyte buffers.
Create a file test.el containing this code:
(defvar test-string (unibyte-string #xce))
(with-temp-file "test.txt"
(set-buffer-multibyte nil)
(setq buffer-file-coding-system 'binary)
(insert test-string))
(with-current-buffer (get-buffer-create "test.txt")
(set-buffer-multibyte nil)
(setq buffer-file-coding-system 'binary)
(erase-buffer)
(insert-file-contents "test.txt")
(search-forward test-string))
Executing this with: emacs -Q -batch -l test.el
prints:
Search failed: "Î"
[Exit 255]
The Lisp code creates a file test.txt for a single character ?\xce. As
expected, hexdump -C test.txt prints:
00000000 ce |Î|
00000001
Opening and searching that character with Emacs fails. That's
definitely not what I was expecting. What's the proper way to search
those characters?
In GNU Emacs 24.0.50.4 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
of 2011-09-05 on ix
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
configured using `configure '--enable-asserts' '--enable-checking' '--with-gif=no' '--with-gnutls=no' 'CFLAGS=-g3 -O0''
^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#9458: 24.0.50; Searching in binary buffers
2011-09-07 12:50 bug#9458: 24.0.50; Searching in binary buffers Helmut Eller
@ 2011-09-07 16:09 ` Andreas Schwab
2011-09-07 16:51 ` Andreas Schwab
1 sibling, 0 replies; 3+ messages in thread
From: Andreas Schwab @ 2011-09-07 16:09 UTC (permalink / raw)
To: Helmut Eller; +Cc: 9458
ELISP> (let ((s "\xce"))
(with-temp-buffer
(set-buffer-multibyte nil)
(save-excursion (insert s))
(and (looking-at s) (search-forward s))))
*** Eval error *** Search failed: "\316"
Likely a bug in boyer_moore.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#9458: 24.0.50; Searching in binary buffers
2011-09-07 12:50 bug#9458: 24.0.50; Searching in binary buffers Helmut Eller
2011-09-07 16:09 ` Andreas Schwab
@ 2011-09-07 16:51 ` Andreas Schwab
1 sibling, 0 replies; 3+ messages in thread
From: Andreas Schwab @ 2011-09-07 16:51 UTC (permalink / raw)
To: Helmut Eller; +Cc: 9458-done
Fixed on emacs-23 branch.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-09-07 12:50 bug#9458: 24.0.50; Searching in binary buffers Helmut Eller
2011-09-07 16:09 ` Andreas Schwab
2011-09-07 16:51 ` Andreas Schwab
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